- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄380657 > RT9227A (Electronic Theatre Controls, Inc.) Advanced PWM and Dual Fixed Linear Power Controller PDF資料下載
參數(shù)資料
| 型號(hào)： | RT9227A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Advanced PWM and Dual Fixed Linear Power Controller |
| 中文描述： | 先進(jìn)的PWM和雙固定線性功率控制器 |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大小： | 210K |
| 代理商： | RT9227A |
Preliminary
RT9227A
DS9227A-02 July 2001
www.richtek-ic.com.tw
1
Advanced PWM and Dual Fixed Linear Power Controller
General Description
The RT9227A is a 3-in-one power controller
optimized for high-performance microprocessor and
computer
applications.
synchronous buck PWM controller, a linear regulator
and a linear controller as well as monitoring and
protection functions into a 24-pin SOP package. The
PWM controller regulates the microprocessor core
voltage. The linear regulator provides power for the
clock driver circuit and the linear controller regulates
power for the GTL bus.
The
IC
integrates
a
The RT9227A features an Intel-compatible, TTL 5-bit
programmable DAC that adjusts the core voltage
from 2.1V to 3.5V in 0.1V increments and from 1.3V
to 2.05V in 0.05V steps. The 5-bit DAC has a typical
±
1% tolerance. The linear regulator uses an internal
drive device to provide a fixed 2.5V
±
2.5% output
voltage. The linear controller drives an external N-
channel MOSFET or a low cost NPN bipolar
transistor to provide a fixed 1.5V
±
2.5%.
The RT9227A monitors all the output voltages. A
Power-good signal is issued when the core voltage is
within
±
10% of the DAC setting and the other levels
are above their under-voltage levels. Additional build-
in over-voltage protection for the core output uses
the lower MOSFET to prevent output voltage above
115% of the DAC setting. The PWM over-current
function monitors the output current using the voltage
drop across the upper MOSFET’s R
DS(ON)
, which
eliminates the need for a current sensing resistor.
Ordering Information
RT9227A
Features
z
3-in-one Regulated Voltages for Microprocessor
Core, Clock, and GTL
z
Compatible with HIP6016
z
Power-good Output Voltage Monitor
Switching section
z
5-bit DAC Programmable from 1.3V to 3.5V
z
±
1% DAC Accuracy
z
Fast Transient Response
z
Full 0% to 100% Duty Cycle Driver
z
Fixed 200kHz Switching Frequency
z
Adaptive Non-overlapping Gate Driver
z
Over-current Monitor Uses MOSFET R
DS(ON)
z
Over-voltage Protection Uses Lower MOSFET
Linear Section
z
Fixed Linear Regulator Output Voltage
z
MOSFET or NPN Driving Capability
z
Ultra Fast Response Speed
z
Under-voltage Protection
z
Internal Thermal Shutdown
Applications
z
Full Motherboard Power Regulation for Computer
z
Low-voltage Distributed Power Supplies
Pin Configurations
Part Number
Pin Configurations
RT9227ACS
(Plastic SOP-24)
TOP VIEW
Operating temperature range
C: Commercial standard
Package type
S : SOP-24
1
2
3
4
5
6
7
8
9
10
VID4
VID3
VID2
VID1
VID0
PGOOD
FAULT
SS
NC
FB2
UGATE1
PHASE1
LGATE1
PGND
OCSET1
VSEN1
FB1
NC
FB3
GATE3
GND
VOT2
VCC
VIN2
11
12
13
14
15
16
17
18
19
20
21
22
23
24
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RT9227A-CS | Advanced PWM and Dual Fixed Linear Power Controller |
| RT9227A-MS | Advanced PWM and Dual Fixed Linear Power Controller |
| RT9230 | 1.5V ADVANCED DUAL PWM AND DUAL LINEAR POWER CONTROLLER |
| RT9230CS | 1.5V ADVANCED DUAL PWM AND DUAL LINEAR POWER CONTROLLER |
| RT9231 | Advaned PWM and Triple Linear Power Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RT9227A_07 | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:Advanced PWM and Dual Fixed Linear Power Controller |
| RT9227A-CS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Advanced PWM and Dual Fixed Linear Power Controller |
| RT9227AGS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:Advanced PWM and Dual Fixed Linear Power Controller |
| RT9227A-MS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Advanced PWM and Dual Fixed Linear Power Controller |
| RT9227APS | 制造商:RICHTEK 制造商全稱:Richtek Technology Corporation 功能描述:Advanced PWM and Dual Fixed Linear Power Controller |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。